I have discovered that the Product Sales Report for WooCommerce plugin has a conflict with another one I use.I use an import tool WP All Import. I have the pro version so not sure if the free version has the same issue. When I try to run an import the process just hangs. After much testing across all my plugins I determined that it works fine when I tu off your plugin alone. Not sure how to best resolve but thought I would report it.
https://wordpress.org/plugins/product-sales-report-for-woocommerce/
